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Fixed image link, german image name
[[image:perpetual motion.png|thumb]]
[[image:perpetuumMobile.png|thumb]]
A '''perpetual motion''' (lat: eternal movement) device is a hypothetical machine which is said to be able to produce work indefinitely without energy sources, or produces more energy than it consumes. Until today, no functioning perpetual motion device has been known of, although numerous lay persons, individual researchers, and pseudo-scientists have tried to construct such a device.
A '''perpetual motion''' (lat: eternal movement) device is a hypothetical machine which is said to be able to produce work indefinitely without energy sources, or produces more energy than it consumes. Until today, no functioning perpetual motion device has been known of, although numerous lay persons, individual researchers, and pseudo-scientists have tried to construct such a device.